Jayawardene, 37, who retired from Tests earlier this week to concentrate on one-day cricket till next year’s World Cup, hit eight boundaries in his 73rd half-century in the shorter format.

Sri Lanka slumped to 75-4 by the 18th over before Jayawardene and Mathews put on 116 for the fifth wicket. Mathews hit nine fours in his best score in one-day cricket, but it was Ashan Priyanjan’s unbeaten 39 off 15 balls at the end that bossted the total.

Lanky left-arm fast bowler Mohammad Irfan, who stands at seven feet, one inch (2.16 metres), generated good bounce from the moisture-laden pitch to claim two wickets for 48 runs.

Wahab Riaz, one of the three left-arm seamers for Pakistan alongside Irfan and Junaid Khan, took three for 50.

The tourists were without their top spinner Saeed Ajmal, who has flown to Australia to undergo tests of his bowling action after being reported by the umpires during the preceding Test series which Sri Lanka swept 2-0.

Meanwhile, Hambantota will also host the second one-dayer on Tuesday due to bad weather in Colombo, the original venue.